6.0 1 ” VALKYRIE “
  • Director: John Terlesky
  • Writer: Rob Hanning
  • Aired in the USA: 23/09/2013
  • Synopsis: The last season ended with Beckett pondering whether accept an important job in DC – ua dilemma is further complicated when Castle asked her to marry. At the premiere of the 6th season, Castle and Beckett deal with the consequences of their decisions while she works in a high-risk research. With Lisa Edelstein as a guest for three episodes, playing a tough and skillful federal researcher, who will play a vital role in deciding who should take Beckett about their future.
6.0 2 ” DREAMWORLD “
  • Director: Tom Wright
  • Writer: David Grae
  • Aired in the USA: 30/09/2013
  • Synopsis: In continuation of the premiere, Beckett race against time to find a toxin that was stolen, and that is capable of killing tens of thousands of people . To make matters worse, Castle was exposed to it, which left him with the expectation of less than 24 hours of life.
6.0 3 ” NEED TO KNOW “
  • Director: Larry Shaw
  • Writer: Elizabeth Beall
  • Aired in the USA: 10/07/2013
  • Synopsis: With Beckett still in DC, Castle and the boys investigate the death of former child star Charlie Reynolds, who gained fame playing a nerd in a lovely TV series in the early 90s but the case takes a twist when Beckett and McCord agents arrive in Washington to take over the investigation, creating a competitive tension at the station. But why the death of a forgotten actor would attract the attention of the FBI? Whatever the reason, Beckett and McCord will not count. Meanwhile, Castle should get used to the new detective 12th, Frank “Sully” Sullivan.
6.0 4 ” NUMBER ONE FAN “
  • Director: John Terlesky
  • Writer: Terrence Paul Winter
  • Aired in the USA: 14/10/2013
  • Synopsis: A desperate young murder suspect, Emma Briggs, takes hostages at gunpoint and then mysteriously insists he will only negotiate with a person: Richard Castle.
6.0 5 ” TIME WILL TELL “
  • Director: Rob Bowman
  • Writers: Terri Edda Miller & Andrew Marlowe
  • Aired in the USA: 10/21/2013
  • Synopsis: The investigation of a haunting murder leads Castle and Beckett to a suspect who claims to have traveled from the future to prevent terrible events happen – these events that would change the course of human history. Is he just a crazy killer, or is it possible you’re telling the truth?
6.0 6 ” GET A CLUE “
  • Director: Holly Dale
  • Screenwriters: Christine Roum
  • Aired in the USA: 28/10/2013
  • Synopsis: Castle and Beckett investigate the bizarre murder of a young woman who was found in a ritualistic pose. When the team finds a collection of strange symbols in his apartment, and the main suspect turns out to be a mysterious monk, Castle is convinced that they are involved in a conspiracy like “The Da Vinci Code.” Meanwhile, Castle needs to accept the fact that Alexis and Pi are living together.
  • Director: Paul Holahan
  • Writer: Marc Dube
  • Aired in the USA: 11/04/2013
  • Synopsis: Alexis Castle enlists the help of a project that tries to prove that an inmate on death row, Frank Henson, was wrongly convicted. With only 72 hours for execution lacking, Castle and Alexis (with the help of Beckett) investigating the original murder to hurry, only to find explosive secrets that may end up sealing the fate of Frank.
  • Director: Bill Roe
  • Screenwriters: Chad Gomez Creasey & Dara Resnik Creasey
  • Aired in the USA: 11/11/2013
  • Synopsis: When a famous couples therapist is murdered, it seems that his access to secrets of his powerful elite clients led to his death. But when Castle and Beckett learn that the victim had in his possession a rare object worth millions of dollars, they realize that this case can be even more complicated – and dangerous – than they thought.
6.0 9 ” DISCIPLE “
  • Director: Rob Bowman
  • Writer: David Amann
  • Aired in the USA: 18/11/2013
  • Synopsis: Castle and Beckett arrive at a crime scene and discover that the victim is extremely similar to the medical examiner Lanie Parish. As the team tries to solve this mystery, they realize that the killer might be doing the detectives of the 12th DP target. Yet know Dr.. Kelly Nieman, a cosmetic surgeon high level, which draws attention to Castle and Beckett for his connection with the victim.
  • Director: John Terlesky
  • Writer: Terri Edda Miller
  • Aired in the USA: 11/25/2013
  • Synopsis: A bloodied man enters a church, but shortly before his death, he hands the priest a mysterious package. When the package proves to be a smiling baby, Castle and Beckett are as accidental nannies newborn. But when they determine that the baby and the victim were not related, they discover that their parents escontrar can be as difficult as solving the murder.
6. 11 ” UNDER FIRE “
  • Director: Paul Holahan
  • Screenwriters: Andrew W. Marlowe & David Amann
  • Aired in the USA: 06/01/2014
  • Synopsis: When Castle and Beckett learn that the victim of a burning building was actually gunned down, they follow the trail of a serial arsonist who turned killer. Meanwhile, Ryan’s wife, Jenny, goes into labor, but a disaster threatens to spoil this moment of joy.
6. 12TH ” DEEP COVER “
  • Director: Tom Wright
  • Writer: Terrence Paul Winter
  • Aired in the USA: 01/13/2014
  • Synopsis: The murder of a young salesman for a car rental company takes a strange turn when the team finds out about her past as a high-level hacker. But nothing compares with the shock of Castle when their investigation leads them straight to his father.
6 . 13 ” LIMELIGHT “
  • Director: Bill Roe
  • Writer: Rob Hanning
  • Aired in the USA: 20/01/2014
  • Synopsis: When a pop star on the rise is found dead in an alley, Castle and Beckett enter the world out of control party of the victim, but when go deeper into a shocking revelation threatens to shake the investigation.
  • Director: Jeannot Szwarc
  • Writer: Elizabeth Beall
  • Aired in the USA: 03/02/2014
  • Synopsis: When the assistant editor of the magazine Modern-dictator Fashion Matilda King is found murdered, Castle and Beckett are thrown into the merciless and cruel world of high sewing in their search for the killer. Meanwhile, the history of Beckett as the model gets a very special access to a surprise wedding.
  • Director: Kevin Hooks
  • Screenwriters: Chad Gomez Creasey & Dana Resnik Creasey
  • Aired in the USA: 02/17/2014
  • Synopsis: The murder of a mean girl from high school Castle brings back one of its colleges, where he is happy to find that the evidence points to a guilty amazing – A telekinetic teenager playing him and Beckett in “Carrie,” real life.
6 . 16 ” ROOM 147 “
  • Director: Bill Roe
  • Writer: Adam Frost
  • Aired in the USA: 02/24/2014
  • Synopsis: When a young guiltily confesses to the murder of an actor in difficulty – knowing details that only the killer would know – Castle and Beckett seem to have a simple case, until they discover evidence that the suspect could not be the killer. When a second person confesses to the crime, also convinced that he had committed the murder, the team realizes that the case is much more mysterious than they thought.
  • Director: Bill Roe
  • Screenwriters: Andrew W. Marlowe & David Amann
  • Aired in the USA: 03/03/2014
  • Synopsis: Beckett is recruited to help a Narcotics investigation, but a routine mission can become deadly when an operation under disguise does not go as planned. To survive, Beckett must enter a battle of wits against some the most dangerous men in the sumnundo New York – including a powerful enemy from his past.
  • Director: Larry Shaw
  • Writers: Christine Roum & Shawn Waugh
  • Aired in the USA: 17/03/2014
  • Synopsis: When a Japanese dancer is mysteriously murdered, Castle and Beckett’s investigation into her secret life reveals evidence that she was killed by a ninja, and now this ninja is behind them.
  • Director: Holly Dale
  • Writer: David Grae
  • Aired in the USA: 24/03/2014
  • Synopsis: Castle and Beckett investigate the murder of a trader on Wall Street, but the case takes a surprising turn when they discover that the victim was an undercover informant of the Attorney General of the USA office. To further complicate things, the Promoter is involved Elizabeth Weston ( Salli Richardson-Whitfield ), the sister of Gates, with whom she does not get along.
6. 20 ” THAT ’70S SHOW “
  • Director: Kevin Hooks
  • Writer: David Amann
  • Aired in the USA: 04/21/2014
  • Synopsis: When a worker finds the body of an infamous New York mobster who disappeared in the 70s, Castle and Beckett try to solve the death of three decades . Unfortunately, the only witness of them is a man who still believed to be in the 70s So to find out what he knows, they need to participate in their madness and party like it’s the last days of disco.
6. 21 ” LAW & BOARDER “
  • Director: Tom Wright
  • Writer: Jim Adler
  • Aired in the USA: 28/04/2014
  • Synopsis: When a professional skateboarder on the rise is gunned down by a mysterious biker, Castle and Beckett enter the world of extreme sports, in which maneuvers defy death are not the only dangerous things.
6. 22 ” VERITAS “
  • Director: Rob Bowman
  • Writers: Rob Hanning & Terence Paul Winter
  • Aired in the USA: 05/05/2014
  • Synopsis: An undercover investigation led by Beckett, related to the death of his mother, takes a troubling turn when a man whom she had under surveillance is dead. When Beckett evidence linking the victim, she and Castle they are targets of a hunt that puts both their lives in great danger.
  • Director: John Terlesky
  • Screenwriters: Andrew W. Marlowe & Terri Miller
  • Aired in the USA: 12/05/2014
  • Synopsis: The much awaited wedding of Castle and Beckett is close, but when a shocking surprise threat to spoil the big day, they will a mad mission full of masked men, angry bikers and a lazy and irresponsible charming past Beckett (guest star Eddie McClintock as Rogan O’Leary).